In this study, we evaluated the Ag–Co alloy as a catalyst in the Li–O₂ battery electrode aiming to improve the electrochemical performance of the energy system. Ag–Co alloys were obtained by cyclic voltammetry from an electrolytic bath. The influence of O₂ pressure (1.5, 2.0, and 2.5 atm) and current density (25, 50, and 75 μA cm⁻²) on the charge and discharge on the cell were studied. It was observed that a medium value of O₂ pressure and current density was favorable to obtain a high capacity. Energy-dispersive X-ray presented that the cyclic voltammetry technique did not favor cobalt deposition. Scanning electron microscopy showed homogeneity of the deposits with the presence of cracks and small crystals. X-ray diffraction evidenced Li₂O as well as the Raman spectra for nickel foam electrode. Oxygen evolution reaction was improved with Ag–Co catalyst according to linear sweep voltammetry and cyclic voltammetry analysis. Steel mesh electrode showed higher discharge capacity (336 mAh g_c⁻¹) when compared with nickel foam (115 mAh g_c⁻¹) which suggests that materials with lower cost can be used as electrodes in Li–O₂ batteries.

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在这项研究中，我们评估了Ag-Co合金作为Li-O ₂电池电极中的催化剂的目的，旨在改善能量系统的电化学性能。Ag-Co合金是通过循环伏安法从电解浴中获得的。研究了O ₂压力（1.5、2.0和2.5 atm）和电流密度（25、50和75μAcm ^-2）对电池充电和放电的影响。观察到中等值的O ₂压力和电流密度有利于获得高容量。能量色散X射线表明，循环伏安法不利于钴沉积。扫描电子显微镜显示出沉积物的均质性，并存在裂纹和小晶体。X射线衍射证明了泡沫镍镍的Li ₂ O以及拉曼光谱。根据线性扫描伏安法和循环伏安法分析，使用Ag-Co催化剂可改善氧气析出反应。与泡沫镍（115 mAh g _c ^-1）相比，钢丝网电极显示出更高的放电容量（336 mAh g _c ^-1），这表明低成本的材料可用作Li-O ₂电池的电极。

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